package edu.gmu.project.examples;

/*
 * Copyright (c) 1995, 2013, Oracle and/or its affiliates. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   - Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 *   - Neither the name of Oracle or the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

import java.io.*;
import java.net.*;

public class KnockKnockClient {
	public static void main(String[] args) throws IOException {

		if (args.length != 2) {
			System.err
					.println("Usage: java EchoClient <host name> <port number>");
			System.exit(1);
		}

		String hostName = args[0];
		int portNumber = Integer.parseInt(args[1]);

		try (Socket kkSocket = new Socket(hostName, portNumber);
				PrintWriter out = new PrintWriter(kkSocket.getOutputStream(),
						true);
				BufferedReader in = new BufferedReader(new InputStreamReader(
						kkSocket.getInputStream()));) {
			BufferedReader stdIn = new BufferedReader(new InputStreamReader(
					System.in));
			String fromServer;
			String fromUser;

			while ((fromServer = in.readLine()) != null) {
				System.out.println("Server: " + fromServer);
				if (fromServer.equals("Bye."))
					break;

				fromUser = stdIn.readLine();
				if (fromUser != null) {
					System.out.println("Client: " + fromUser);
					out.println(fromUser);
				}
			}
		} catch (UnknownHostException e) {
			System.err.println("Don't know about host " + hostName);
			System.exit(1);
		} catch (IOException e) {
			System.err.println("Couldn't get I/O for the connection to "
					+ hostName);
			System.exit(1);
		}
	}
}